Hydrocarbon-burner.



No. e4|,55s. Patented Jan. "5, neon. s. SPILLABS. HYDRUCABBDN BURNER.

(Application filed July 24, 1899.)

i (No Model.)

NITED TATES SPENCER SPILLARS, OF POMONA, CALIFORNIA.

HYDROCARBON BURNER.

SPECIFICATION forming part of Letters Patent N 0. 641,558, dated January 16, 1900.

Application filed July 24,1899. Serial No. 725,003. (No model.)

To ttZZ whom it may concern:

Be it known that I, SPENCER SPILLARS, a citizen of the United States, residing at P0- mona, in the county of Los Angeles, State of California, have invented a new and useful Hydrocarbon-Oil Burner, of which the following is a specification.

My invention relates to a burner in .which hydrocarbon oil in conjunction with steam is used as a fuel in furnaces; and the object thereof is to provide a burner in which the amount of fuel burned when the load be comes lighter than normal is automatically regulated by the pressure of the steam. I accomplish this object by means of the mechanism described herein, and illustrated in the accompanying drawing, being a side view, partly broken away and partly in longitudinal section, of my burner.

In steam motive mechanisms having burners in which crude oil and steam are used as fuel to generate steam as the motive force it is usual to regulate the oil and steam valves on the fuel-pipes, so as to provide the necessary amount of fuel to produce the steam to do the work required, and when the load lightens the supply of oil must be decreased or an excessive amount of steam is generated, which is both wasteful and dangerous, and, again, when the load becomes normal the oil, supply must again be regulated. This requires constant attention, and where the load frequently changes is often neglected. With my burner this constant attention is unnecessary, as the supply of oil is automatically regulated by the steampressure when the load falls below normal.

In the drawing, A is the oil-supply pipe, connected to a suitable supply, which enters into and terminates in the steam-pipe B, connected to the steam-chest of the boiler at such distance from the contracted horizontal discharge-orifice B that the oil and steam may thoroughly commingle before they enter the furnace. The space in pipe B in front of pipe Ais denominated mixing-chamber O. In the discharge end of pipe A is valve D to regulate the flow of the oil therethrough, having seat d affixed to pipe A. Valve D has stem D, which projects through the elbow A on pipe A and has a portion threaded 0n which is nut E, provided with passage E for the passage therethrough of oil. Nut E is longitudinally movable in pipe A, but non-rotative therein. Surrounding stem D" is spiral spring F to hold valve D open against a predetermined amount of steam pressure in chamber 0. On the projecting end of stem D is hand-wheel G, by means of which the stem is rotated to adjust the tension on spring F.

My device is operated as follows: In practice I prefer that the oil shall be delivered through pipe A under a moderate pressure by gravity. My burner being in position in a furnace, the tension on spring F is set so that the burner will furnish the necessary oil to produce a tire that will generate the amount of steam required for the work in hand. It will be seen that as long as the work is normal the burner remains in the position set.

' Now assume that one-half of the load on the working machinery is suddenly removed. This causes a corresponding risein the steampressure in the boiler, and as the steam is fed therefrom to supply the burner it causes a corresponding rise of pressure in chamber 0, which, acting on valve D, partly or entirely closes the same, and thereby partially or entirely shuts off the supply of oil. This reduces the fire until the steam-pressure equals the load, and the supply of oil is thereby automatically regulated by the steam-pressure t0 the requirements of the work, thus dispensing with the careful attention which is necessary when the burner must be regulated by the engineer in charge and enabling the engineer to attend to other work besides running the engine.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-= l. A hydrocarbon burner, comprising a steam-pipe, having a contracted horizontal discharge-orifice, an oil-pipe entering into and terminating in said steam-pipe in the rear of the discharge-orifice of said steam-pipe, a mixing-chamber Within said steam-pipe intermediate the termination of the oil-pipe and the discharge-orifice of the steam-pipe, a pressure-regulated valve in the discharge end of the oil-pipe adapted to be partially or entirely closed when the steam-pressure in the mixing-chamber becomes excessive, whereby the flow of the oil therethrough is automatic ally regulated by the steam'pressure in the mixing-chamber when pressure in said chamber rises above normal.

2. Ahydrocarbon-burner,coinprisingstealnpipe B, having contracted horizontal discharge-orifice B, mixing-chamber 0 Within 4 pipe 13, oil-pipe A entering and terminating inpipe 13, valve D in the discharge end of pipe A havin stem D nut E having assa e E b I D 10 therethrough on stem D, spring F surrounding stem D all substantially as described herein for the uses set forth.

In witness that I claim the foregoing I have hereunto subscribed my name this 14th day of July, 1899.

SPENCER SPILLARS.

Witnesses:

GEO. J. MITCHELL, O. H. DUVALL. 

